2D estimated coordinate quality
2D CQ =
σ
2
D
* sin
2
V +
σ
2
Hz, V
* D
2
2D CQ Estimated horizontal coor-
dinate quality.
3D estimated coordinate quality
3D CQ =
σ
2
D
+
σ
2
Hz, V
* D
2
* (1 + sin
2
V)
3D CQ Estimated spatial coordi-
nate quality.
Working Example 1
Instrument:
TS15
Angular accuracy:
2" = 6.1728*10-4 gon =>
σ
Hz,V =
2"*
EDM accuracy:
1 mm + 1.5 ppm for an IR measure-
ment
Slope distance:
150 m
Hz:
210 gon
V:
83 gon
1D CQ = 0.00201 m 2.0 mm
2D CQ = 0.00237 m 2.4 mm
3D CQ = 0.00311 m 3.1 mm
Working Example 2
Instrument:
TS15
Angular accuracy:
2" = 6.1728*10-4 gon =>
σ
Hz,V =
2" *
EDM accuracy:
1 mm + 1.5 ppm for an IR measure-
ment
Slope distance:
7000 m
Hz:
210 gon
V:
83 gon
1D CQ = 0.09263 m 92.6 mm
2D CQ = 0.09663 m 96.6 mm
3D CQ = 0.13386 m 133.9 mm
Working Example 3
Instrument:
TM50
1044
Glossary
